Sabre 15538 Hydro - TESTS AND ADJUSTMENTS; BATTERY LOAD TEST; DC AMPERAGE OUTPUT TEST

TESTS AND ADJUSTMENTS ELECTRICAL
3/5/97 4 - 21
IMPORTANT: Decrease charge rate if battery gases
or bubbles excessively or becomes too warm to
touch.
5. Check specific gravity after 30 minutes (60 minutes
for maintenance-free battery).
More than 50 point variation between cells: replace
battery.
Less than 50 point variation between cells: go to
steps 6 and 7.
NOTE: If battery was discharged at slow or unknown
rate, charge at 10–15 amps for 6–12 hours.
(Maintenance-free battery: 12–24 hours.)
If battery was discharged at fast rate, charge at
20–25 amps for 2–4 hours.
(Maintenance-free battery: 4–8 hours.)
6. Continue charging battery until specific gravity is
1.230-1.265 points.
7. Load test battery.
BATTERY LOAD TEST
Reason:
To check condition of battery under load.
Equipment:
• Battery Tester
Connections:
1. Turn load knob (C) of tester counter-clockwise to
off.
2. Connect tester positive cable (D) to battery positive
terminal.
3. Connect tester negative cable (E) to battery
negative terminal.
C
D
E
B
A
Procedure:
1. Turn load knob of tester clockwise until amperage
reading (A) is equal to:
a.Cold cranking amperage rating (use blue scale).
— OR —
b.Three times ampere hour rating (use black scale).
2. Hold for 15 seconds and turn load knob of tester off.
3. Repeat procedure steps 1 and 2 from above and
read condition of battery at DC Volts scale (B).
Results:
• If the battery does not pass the test and has not
been charged, charge battery and retest.
• If the battery does not pass the test and has been
charged, replace the battery.
DC AMPERAGE OUTPUT TEST
Reason:
To determine direct current amperage output of the
engine.
Equipment:
• Multimeter
Connections:
1. Remove surface charge from battery by cranking
engine for 15 seconds.
2. Set multimeter to read DC amperage
3. Disconnect engine connector (A).
4. Connect red multimeter red lead to red wire from
engine connector at terminal (B).
5. Connect black multimeter lead to chassis ground.
Procedure:
1. Start and run engine at 3600 rpm while watching
multimeter.
Specifications:
DC Amperage (Max) . . . . . . . . . . . . . . . . . . . . 2 Amps
Results:
• If engine fails to produce DC amperage, see the
Briggs & Stratton service manual for repair
information.
A
Red Wire
B
www.servicemanualall.com